2008/08/08 by D. Pillay, Devina Pillay, M. D. Johannes +1 · 14 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Angle-resolved photoemission spectroscopy #Condensed matter physics #Copper-based nanomaterials and applications #Density functional theory #Electronic structure #Fermi surface #Geometry #Physics #Quantum mechanics #Spectral line #Surface (topology) #Transition Metal Oxide Nanomaterials #cond-mat.mtrl-sci #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.101.246808
published in Physical Review Letters 101(24), 246808 (American Physical Society) · 4 pages, 2 figures
arxiv created 2008/08/08 · openalex publication_date 2008/12/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The idea that surface effects may play an important role in suppressing eg' Fermi surface pockets on NaxCoO2 (0.333 < or = x < or = 0.75) has been frequently proposed to explain the discrepancy between local-density approximation calculations which find eg' hole pockets present and Angle resolved photoemission spectra (ARPES) experiments, which do not observe the hole pockets. Since ARPES is a surface sensitive technique, it is important to investigate the effects that surface formation will have on the electronic structure. We show that a combination of surface formation and contamination effects could resolve the ongoing controversy between ARPES experiments and theory.